1. What is XFree86

XFree86 is a port of X11R6.5.1 that supports several versions of Unix.
It is derived from X386 1.2 which was the X server distributed with X11R5.
This release consists of many new features and performance improvements as well
as many bug fixes.
The release is available as a source code distribution, as well as binary
distributions for many architectures.